<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        * {
            margin: 0;
            padding: 0;
        }

        #input1 {
            width: 400px;
            height: 24px;
            margin-left: 100px;
        }

        div {
            width: 404px;
            height: 300px;
            margin-left: 100px;
            background: #eeeeee;
        }

        #content {
            display: none;
        }

    </style>
</head>
<body>
    <form action="" method="post">
        <input id="input1" onkeyup="autocompletion(this)" name="keyword" autocomplete="false"> <input type="submit"
                                                                                                      value="搜索">
        <div id="content"></div>
    </form>
</body>
<script src="webjars/jquery/3.6.1/jquery.js"></script>
</html>